Verfahren zum Steuern der Strahlformung in einem Mobilfunk-Kommunikationssystem, Handover-Verfahren und Basisstation dafür

摘要

The invention relates to a method and base stations for controlling the beam formation in a downlink signal, emitted in a mobile radio communication system, from base stations (EBS, FBS) to a user station (MS), which comprise several antennae and are embodied to select a weighting vector, using first back-coupling confirmation sent by the user station (MS) and emit a downlink signal to the user station (MS), weighted with the above. At least one so-called highly-advanced base station (FBS) is embodied for variation of the coefficients of a weighting vector selected on the basis of the first back-coupling information, by means of second back-coupling information sent by the user station (MS), whilst in at least one other so-called simple base station (EBS) the selected weighting vectors are set.